Controlling mechanism.



H. C. NICHOLAUS. CONTROLLING MECHANISM. APPLICATION FILED MAR'l3 1912- 1,1 16,908. N Patent-ed Nov. 10, 1914.

2 8HEETSSHEET 1.

@Fmw. mafia I: W M v THE NORRIS PETERS (20., PHOTO-LITHO.. WASHINGTON. I1 C4 H. G. NICHOLAUS. CONTROLLING MECHANISM. APPLICATION FILED MAR. 13, 1912.

Patented Nov. 10, 1914.

2 SHEETSSHEET 2.

TH: NORRIS PETERS 60.. PHbm-Llrh k. WASHINGTON. D. C.

45 Fig. 2 is ,a view in longitudinal section of HERMAN o. NIc oLAUs, or

Y, inn'rnorr, ICHIGAN;

conrnontnve MECHANISM.

- In'the operatlonof certain types of smoke consumers for furnaces or boilers and any other like apparatus, it is frequently necessary or desirable that steam be injected into the combustion chamber over thefuel during the initial moment of combustion-after fresh fuel has been placed therein or that the door to the combustion chamber be closed gradually to admit air over the fuel bed to furnish oxygen for the freshly generated gases, Valves controlling such steam jets are frequently arranged to be opened by the operation of the fire doorand various devices have been used to automatically and gradually closer such a valve after the fuel door is closed or while it is beingclosed so as to prolong the period of theinjection of the steam, or to close the door itself either with the valve.

This invention relates to means for automatically controlling a valve, fire door, or damperto' close the same gradually within a predetermined period, and more particu-' larlyto a-device of this character adapted requirements of service.

for, useas above described, the inventionineluding means for carrying the period of operation of the mechanism to meet different The invention consists in the matters hereinafter set forth, and more particularly pointed out in the appended claim.

in the drawings, Figure 1 "is a view in front elevation, partially broken awayand with the outer casing removed, of-a device that embodies features of the invention, and

the mechanism.

As herein indicated a plate 1 of suitable design and material for attachment to a "cable longitudinally on a means, as IVB mP a furnace or the like, supports a removable housing or casing main frame v4 mountedon thebase late, any convenient United States of of which reference '13 2. A rack bar 3 is recipro-l like that vvhen the latter is opened the bar is moved to the position indicated; An actuating weight? of suitable material is sus ended from'tlle lower end fof theb'ar" or other suitable place, arranged toclosethe door when the weight moves the rack bar back, I sired, a valve inthe steamsupply pipe througheny suitable connectionslmzw main drive pinion-8 studQin the main frame to \mesh with the rack; bar. and has a ratchet wheel or step 10 which is adaptedto drive a followerigear 11 when the rack I bar moves outwardly, through the medium, of, a suitable 7 dog", or pawl {12 having a lug :13, engaging) the "ing the dogin position. :Preferably the'gear- I the bar alinement. The lower end of the bar which extends'beyond the hous'ingQ, is

The push rod is also and. also; if de is journaled on a UNITED STATES PATENT omen 1 nn raorr, nicnrenienssrenonTo 'JoHN'wQonAmQ ou 1 Specification of Letters'llatentl j Application fiiea'ivrmh 13, 1912., ,seiiei No.7 683,445, I

ratchet,-a spring finger 14 yieldingly holdn I ll is journ'aledon thestud 9with the dog I pivoted on the lug 13 extendingthrough the opening of the wheel.

outer face of the-gear and the I A governor brake spindle 15 is journaled on the upper'part of the-frame 4 and is 0p 7 eratively connected (to the gear 11 by any suitable means, as for example, a pair of beveled gears 16 operating an arbor 17 which in'turn is coupled through a reductiontrain indicated at 18 whose lnitial pinion 19 meshes with the gear 11.,

is keyed to rotate with the latter, is nor mally forced downward by a spring 21-en-' circling the splndle in compression between the plate and the'lower end'of a thrust'bean ing stud 22 or the like, against the action, of a pair of governor weights 23 hung by arms 24: to swing and revolve with, the spindle and coupled by links 25 to thedisk 20 to d60 force the latter up when the centrifugal action'of the weights thrusts them out A stud 5 passing ofga Wrench or suitable tool through an 'openingin the casing 2 closedby (a guard to which the friction plate may be raised Preferably such stop is a stud 27 screwthreadedthrough frame so as to bearv against Adj ustlnent suitably disp'osed 'brake limits the distance A. friction plate or disk 20 that is longi-ygf-l tudinallyreciprocableon the spindle 15 and L 1' cap. The push rod 6 by which the rackbar is moved to its upper limit is also operatively connected to any valve, damper or door that it is desired to control so that downward movement of the rack bar under-the pull of the weight? gradually closes the same. In operating the devicethe brake for the governor disk is so adjusted that the governors rate of rotation is regulated by the applied friction whereby, when the weight is raised and released, it can move" the rack bar back again only as fast as the governor allows the train driven by the rack to turn. As a consequence the mechanism may be made to closethe valve, the furnacedoor or the like as rapidly or slowly as needed. As there are no springs effected by furnace heat, the device is particularly adaptable for the purpose'not ed and when once adjusted can be relied upon tocontrol the door'or valve as desired.

Obviously, changes may be made in the details of construction without departing from" the spirit of the invention and I do i not care to limit myself 'to any particular form or arrangement of parts,

I claim: i z-In a controlling mechanism, the combinaon with a-casing,-of a vertically-recipro- 'wheel of said pinion,

'ment can be imparted to said gear whose tempercan be operated by a above said train of said train of cable rack bar extendinginto the lower end of said'casing, a weight detachably connected to the lower end of said rack bar, a frame arranged within said casing, a pinion revolubly supported from said frame and meshing with said rack, a ratchet wheel forming part of said pinion, an apertured gear wheel revolubly' supported adjacent to the ratchet a spring pressed pawl carried by one side of said gear wheel, a lug carried by said pawl and extending through one of the aperturesof said gear wheel to engage said ratchet wheel whereby movewheel by an outward movement of said rack bar, a train of gears supported by said frame and movementofsaid gear wheel, a governor supported by said frame gears and having connection therewith to control the operation of gears and a movement of said rackbar out of said'casing.

Intestimony whereof I my signature in presence oftwo witnesses.

HERMAN o. NICHOLAUS. WVitnesses: Y

ANNA M. Donn,

OTTO, F. BARTHEL.

and

obtained for live cents each, by a ddressing the Commissioner of Patents,

Washington, D. 0." 

